/*
 * @Description: 
 * @version: 
 * @Company: 
 * @Author: GeYang
 * @Date: 2019-11-04 10:58:34
 * @LastEditors: 
 * @LastEditTime: 2019-11-04 11:31:25
 */
// var str = `
// asdasd
// sadasd
// asdasdad
// asdasd`;

// console.log(str);

//
var a = 5;

function calc( num ){

    num = num + 5 ;

    console.log(num);
    console.log(a);

}
calc( a );
console.log(a);

var b = [1,2,3,4,5];


function change( arr ){



    _arr[0] = 'test';

    console.log(_arr);
    console.log(b);

}
change( b );
console.log(b);
